The Tiny Things Are Heavier follows Sommy, a Nigerian woman who comes to the United States for graduate school two weeks after her brother, Mezie, attempts suicide. Plagued by the guilt of leaving Mezie behind, Sommy struggles to fit into her new life as a student and an immigrant. Lonely and homesick, Sommy soon enters a complicated relationship with her boisterous Nigerian roommate, Bayo, a relationship that plummets into deceit when Sommy falls for Bryan, a biracial American, whose estranged Nigerian father left the States immediately after his birth.

Rei, Kiki, and Ai are three sisters divided by distance and circumstance. Ambitious Rei works in finance in London; Kiki is the single mother of a young son, working in a retirement home in Tokyo; and Ai, the youngest, is a peripatetic Japanese music idol. Having lost both parents, one way or another, the sisters rely on each other as family, far-flung as they are.

In her small Montana hometown, Lauren Parker has assumed a few different roles: teenage hell-raiser, sister of superstar Gabe Parker, and most recently, tragically widowed single mother. She’s never cared much about labels or what people thought of her, but dealing with her grief over the loss of her husband, Spencer, has slowly revealed that she’s adrift in her own life.

With a leading role on a hit TV show and a relationship with Hollywood’s latest heartthrob, Meg Bryan appears to have everything she ever wanted. But underneath, her happiness is as fake as her stage name, Lana Lord. Following a tiny nervous breakdown at her thirtieth birthday party, she books an impromptu trip to Ireland. Specifically, to the village where she and her best friend Aimee always dreamt of moving. When Meg arrives, the people in town don’t just recognize her, they seem to know her. She quickly—reluctantly—realizes she has somehow slipped into an alternate reality.

Despite managing bookstores on the same Boston street, Josie Klein and Ryan Lawson have never interacted much—Josie’s store focuses on serious literature, and Ryan’s sells romance only. But when the new owner of both stores decides to combine them, the two are thrust into direct competition. Only one manager will be left standing, decided by who turns the most profit over the summer.